George Wolf

PSD -D202C
PHYSICAL SCIENCE CENTER
Associate Professor
Faculty
TEMPE Campus
Mailcode
1604

Biography

George Wolf received his B.S. degree in chemistry from the University of California at San Diego and an M.S. degree from the University of California at Berkeley working with Professor Alex Pines. He completed his Ph.D. degree at Berkeley in geophysics working with Professors Raymond Jeanloz and Mark Bukowinski in fundamental experimental and theoretical studies of the chemistry of deep planetary interiors. After his graduate work, he joined the faculty at Arizona State University. His research interests include fundamental studies of liquids and the amorphous state, carbon sequestration, and the application of high pressure as a route to develop new materials and to investigate novel chemistries. He is also actively involved in the development of the next generation of bionic, robotic prosthetics. He is the recipient of an National Science Foundation Presidential Investigator Award and the ASU Centennial Teacher of the Year Award.

Education

  • Ph.D. Geophysics,  University of California-Berkeley 1986
  • M.S. University of California-Berkeley
  • B.S. Chemistry, University of California-San Diego

Research Interests

Most of our present knowledge of chemistry has been accrued over only a small window in the parameters which can influence chemical behavior. With recent advancements in experimental techniques it is now possible to study chemistry at conditions that are far removed from those of our normal environment. In our group we exploit pressure and temperature as a means to both statically and dynamically alter the nuclear separations and structural geometry in materials, and hence, can produce dramatic changes in a materials chemical and physical properties. For example a solid that is an insulator at zero pressure can become a semiconductor, a metal, or even a superconductor at high pressures. Often a crystalline solid undergoes radical changes in its atomic structure at high pressure or may even convert to an amorphous state. It is sometimes possible to metastably trap these high-energy states upon decompression back to ambient conditions, a powerful means to synthesize novel new materials. Spectroscopic measurements under controlled pressure and temperature conditions also provide new insight into the dynamical processes of materials and the mechanisms of phase transitions or chemical reactions. Moreover, pressure is a powerful variable in exploring the interatomic force fields of materials. Measurements of the change in structure, dynamics and electronic properties up to extreme conditions of pressure and temperature provide critical tests for theoretical models of bonding.

Central to our experimental research is the high-pressure diamond anvil cell. The incredible advancements in high-pressure research over the last decade can be directly attributed to the development of the diamond anvil cell. With this device, materials can be exposed to near hydrostatic pressures in excess of a megabar (one million times the atmospheric pressure at the surface of the Earth). The powerful utility of this high-pressure cell arises from the unique properties of diamond. Not only is diamond the strongest known material, it is also transparent to a wide range of electromagnetic radiation. Infrared lasers are used to heat samples under pressure in the diamond anvil cell to temperatures in excess of 4000K. Optical lasers are used for Raman and Brillouin spectroscopy to study the vibrational and elastic properties of materials at high pressure. X-rays from synchrotron sources are used to study the high pressure and high temperature structural properties of materials. NMR is used to provide information on both the structural and dynamical properties of liquids over an extreme range in density. But, perhaps the most appealing advantage is that a sample at high pressures can be visually observed in the diamond cell under a microscope.

Publications

  • Chamberlin R.V., Vermaas J.V, Wolf G.H. Beyond the Boltzmann factor for corrections to scaling in ferromagnetic materials and critical fluids. EUROPEAN PHYSICAL JOURNAL B (2009).
  • Chamberlin, R.V. and Wolf, G.H. Fluctuation-theory constraint for extensive entropy in Monte-Carlo simulations. EUROPEAN PHYSICAL JOURNAL B (2009).
  • Hamdallah Bearat, Michael McKelvy, Andrew Chizmeshya, Deirdre Gormley, Ryan Nunez, R Carpenter, Kyle Squires, George Wolf. Carbon Sequestration via Aqueous Olivine Mineral Carbonation: Role of Passivating Layer Formation. Environmental Science & Technology (2006).
  • McKelvy, Michael, Chizmeshya, Andrew, Andrew, V., Soignard, Emmanuel, Marzke, Robert, Wolf, George, Bearat, Hamdallah, Doss, Brandon. Laboratory investigation of fluid/solid sequestration reaction processes under in situ sequestration process conditions. (2006).
  • McKelvy, Michael, Chizmeshya, Andrew, Soignard, Emmanuel, Marzke, Robert, Wolf, George, Bearat, Hamdallah, Doss, Brandon. Investigation of Fluid/Solid Sequestration Reaction Processes under In Situ Sequestration Process Conditions. (2006).
  • J Diefenbacher, Michael McKelvy, Andrew Chizmeshya, George Wolf. Externally controlled pressure and temperature microreactor for in situ x-ray diffraction, visual and spectroscopic reaction investigations under supercritical and subcritical conditions. Review of Scientific Instruments (2005).
  • Michael McKelvy, Jason Diefenbacher, Andrew Chizmeshya, George Wolf, Robert Marzke, Hamdallah Béarat. Enhancing the Observation of Above and Below Ground Carbon Sequestration Processes under In Situ Pressure and Temperature Conditions. Proc. 30th International Technical Conference on Coal Utilization & Fuel Systems (2005).
  • Robert Marzke, J Piwowarczyk, P McMillan, George Wolf. Al motion rates in levitated, molten Al2O3 samples, measured by pulsed gradient spin echo 27Al NMR. Journal of the European Ceramic Society (2005).
  • McKelvy, Michael, Diefenbacher, Jason, Chizmeshya, Andrew, Wolf, George, Marzke, Robert, Bearat, Hamdallah. Enhancing the observation of above and below ground carbon sequestration processes under in situ pressure and temperature conditions. (2005).
  • Michael, J, Chizmeshya, Andrew, Diefenbacher, Jason, Bearat, Hamdallah, Carpenter, R, Wolf, George, Gormley, Deirdre. Developing an atomic-level understanding of the mechanisms that govern CO2 sequestration mineral carbonation reaction processes. (2005).
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Béarat, Hamdallah, Carpenter, R, Wolf, George, Gormley, Deirdre. Developing an Atomic-Level Understanding of the Mechanisms that Govern CO2 Sequestration Mineral Carbonation Reaction Processes. (2005).
  • George Wolf, Andrew Chizmeshya, Jason Diefenbacher, Michael McKelvy. In Situ Observation of CO2 Sequestration Reactions Using a Novel Microreaction System. Environmental Science and Technology (2004).
  • Jeff Yarger, George Wolf. Chemistry: Polymorphism in liquids. Science (2004).
  • Jeffery Yarger, George Wolf. Polymorphism in Liquids. Science (2004).
  • M Shemkunas, William Petuskey, Andrew Chizmeshya, K Leinenweber, George Wolf. Hardness, elasticity, and fracture toughness of polycrystalline spinel germanium nitride and tin nitride. Journal of Materials Research (2004).
  • Michael McKelvy, Andrew Chizmeshya, Jason Diefenbacher, Hamdallah Bearat, George Wolf. Exploration of the Role of Heat Activation in Enhancing Serpentine Carbon Sequestration Reactions. Environmental Science and Technology (2004).
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Bearat, Hamdallah, Wolf, George. Exploration of the role of heat activation in enhancing serpentine carbon sequestration reactions. (2004).
  • A Babushkin, H Hochheimer, I Korionov, Y Volkova, George Wolf. High-pressure DC resistance of ZrO2. Fizika i Tekhnika Vysokikh Davlenii (Donetsk, Ukraine) (2003).
  • Matthew Bauer, Cole Ritter, P Crozier, Ren Jie, J Menendez, George Wolf, J Kouvetakis. Synthesis of ternary SiGeSn semiconductors on Si(100) via SnxGe1-x buffer layers. Appl. Phys. Lett (2003).
  • Chizmeshya, Andrew, McKelvy, Michael, Wolf, George, Kocher, Michael, Gormley, Deirdre. Quantum simulation studies of olivine mineral carbonation. (2003).
  • Michael McKelvy, Andrew Chizmeshya, Hamdallah Bearat, Jason Diefenbacher, Renu Sharma, R Carpenter, George Wolf. Developing a mechanistic understanding of serpentine CO2 mineral carbonation reaction processes. Proceedings of the International Technical Conference on Coal Utilization & Fuel Systems, 27th (2002).
  • Michael Shemkunas, George Wolf, Kurt Leinenweber, William Petuskey. Rapid synthesis of crystalline spinel tin nitride by a solid-state metathesis reaction. Journal of the American Ceramic Societ (2002).
  • Chizmeshya, Andrew, McKelvy, Michael, Sankey, Otto, Wolf, George, Sharma, Renu, Bearat, Hamdallah, Diefenbacher, Jason, Carpenter, R. Atomic-level understanding of CO2 mineral carbonation mechanisms from advanced computational modeling. (2002).
  • Zheng, Qing, Green, Jenny, Kieffer, John, Poole, Peter, Shao, Jun, Wolf, George, Angell, C. Limiting tensions for liquids and glasses from laboratory and MD studies. (2002).
  • J Taraci, George Wolf, J Kouvetakis, S Zollner, M McCartney, J Menendez, M Santana-Aranda, D Smith, A Haaland, A Tutukin, G Gundersen. Synthesis of silicon-based infrared semiconductors in the Ge-Sn system using molecular chemistry methods. Journal of the American Chemical Society (2001).
  • Z Zhang, K Leinenweber, M Bauer, L Garvie, P McMillan, George Wolf. High pressure bulk synthesis of crystalline C6N9H3 HCl: A novel C3N4 graphitic derivative. Journal of the American Chemical Society (2001).
  • . . Frontiers of High Pressure Research II: Application of High Pressure to Low Dimensional Novel Electronic Materials (2001).
  • Cynthia Polsky, Luz Maria Martinez, K Lienenweber, M Verhelst, C Angell, George Wolf. Pressure induced crystallization of vitreous ZnCl2. Phys. Rev. B (2000).
  • J Dong, O Sankey, S Deb, George Wolf, P McMillan. Theoretical study of ?-Ge3N4 and its high pressure spinel phase. Phys. Rev. B (2000).
  • Polsky, C, Smith, K, Wolf, George. Low-frequency Raman spectra of SiO2 and GeO2 glasses at high pressure. Universities Press (2000).
  • Somayazulu, M, Leinenweber, K, Hubert, H, McMillan, P, Wolf, George. High-pressure high-temperature synthesis of spinel Ge3N4. Universities Press (2000).

Research Activity

Courses

Spring 2018
Course NumberCourse Title
CHM 114General Chemistry for Engrs
Fall 2017
Course NumberCourse Title
CHM 114General Chemistry for Engrs
Spring 2017
Course NumberCourse Title
CHM 114General Chemistry for Engrs
Fall 2016
Course NumberCourse Title
CHM 345Physical Chemistry I
Spring 2016
Course NumberCourse Title
CHM 346Physical Chemistry II
Fall 2015
Course NumberCourse Title
CHM 345Physical Chemistry I
Spring 2015
Course NumberCourse Title
CHM 240Math Methods in Chemistry
CHM 346Physical Chemistry II
Fall 2014
Course NumberCourse Title
CHM 345Physical Chemistry I
CHM 598Special Topics
Spring 2014
Course NumberCourse Title
CHM 346Physical Chemistry II
Fall 2013
Course NumberCourse Title
CHM 345Physical Chemistry I

Presentations

  • Thomas Sugar, Jeff Ward, and George Wolf. "Odyssey Ruggedized Robotic Ankle". Advanced Prosthetics and Human Performance Research, TATRC US Army Medical Research. Fort Detrick, M (Nov 2013).
  • Marzke, Robert, Chizmeshya, Andrew, Wolf, George, McKelvy, Michael, Ito, Naoki, Bearat, Hamdallah, Doss, Brandon. Investigating geological sequestration reaction processes under In Situ process conditions. 32nd International Technical Conference on Coal Utilization and Fuel Systems (May 2007).
  • Marzke, Robert, Wolf, George, Boucher, Susan, Piwowarczyk, Jeremy, Petuskey, William. Locations of metal ions in the new glasses in the calcium aluminate-monazite system, studied by NMR of 27Al and 31P and by Raman scattering. American Physical Society March Meeting (Mar 2007).
  • Marzke, R, Wolf, George, Boucher, S, Piwowarczyk, J, Petuskey, W. Lanthanum phosphate calcium aluminate glasses: synthesis, and characterization by 27Al and 31P NMR and by Raman spectroscopy. 2nd Directionally Solidified Eutectic Ceramics Workshop (sponsored by AFOSR) (Dec 2006).
  • Marzke, R, Boucher, S, Piwowarczyk, J, Wolf, George, Petuskey, W. Synthesis and structural analysis of glasses and glass ceramics in the CaO-Al2O3-LaPO4 system. 8th International Symposium on Crystallization in Glasses and Liquids (sponsored by the American Ceramic Society) (Sep 2006).
  • McKelvy, Michael, Chizmeshya, Andrew, Soignard, Emmanuel, Marzke, Robert, Wolf, George, Béarat, Hamdallah, Doss, Brandon. Investigation of Fluid/Solid Sequestration Reaction Processes under In Situ Sequestration Process Conditions. International Technical Conference on Coal Utilization & Fuel Systems (Jun 2006).
  • McKelvy, Michael, VG Chizmeshya, Andrew, Marzke, Robert, Soignard, Emmanuel, Wolf, George, Béarat, Hamdallah, Doss, Brandon. Laboratory Investigation of Fluid/Solid Sequestration Reaction Processes under In Situ Sequestration Process Conditions. The 31st International Technical Conference on Coal Utilization & Fuel Systems (May 2006).
  • Chizmeshya, Andrew, McKelvy, Michael, Wolf, George, Béarat, Hamdallah, Marzke, Robert, Soignard, Emmanuel, Diefenbacher, Jason. Development of an In Situ "Window" into Below-Ground Geological Sequestration Reaction Processes. Fifth Annual Conference on Carbon Capture and Sequestration (May 2006).
  • McKelvy, Michael, Diefenbacher, Jason, Chizmeshya, Andrew, Wolf, George, Marzke, Robert, Béarat, Hamdallah. Enhancing the Observation of Above and Below Ground Carbon Sequestration Processes under In Situ Pressure and Temperature Conditions. 30th International Technical Conference on Coal Utilization & Fuel Systems (Apr 2005).
  • Diefenbacher, Jason, Piwowarczyk, Jeremy, Marzke, Robert, Wolf, George, McKelvy, Michael. A Novel High Pressure, Variable Temperature NMR Probe for the Study of Carbon Dioxide Solution Chemistry under Mineral and Geological Sequestration Conditions. 30th International Technical Conference on Coal Utilization & Fuel Systems (Apr 2005).
  • McKelvy, M, CHizmeshya, A, Diefenbacher, J, Bearat, H, Carpenter, R, Wolf, George. Furthering the Mechanistic Understanding of Above-Ground CO2 Mineral Sequestration Reaction Processes. 30th International Technical Conference on Coal Utilization & Fuel Systems (Apr 2005).
  • Marzke, R, Boucher, S, Piwowarczyk, J, Wolf, George. P-O and Al-O Bonding in Alumina-Calcia-Monazite Melts Studied by Raman Scattering and Ultra High-temperature NMR. American Physical Society, APS March Meeting (Mar 2005).
  • McKelvy, M, Chizmeshya, Andrew, Diefenbacher, J, Bearat, H, Carpenter, R, Wolf, George, Gormley, D. Developing an atomic-level understanding of the mechanisms that govern CO2 sequestration mineral carbonation reaction processes. 2005 TMS Annual Meeting: EPD Congress (Feb 2005).
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Béarat, Hamdallah, Carpenter, R, Wolf, George. Developing an Atomic-Level Understanding of the Mechanisms that Govern CO2 Mineral Carbonation Reaction Processes. TMS 2005 (Feb 2005).
  • Marzke, R, Piwowarczyk, J, Wolf, George, Boucher, S, Petuskey, W. Laser heated gradient NMR studies of ceramic liquids. 2004 Contractors Meeting for the Air Force Office of Scientific Research (Aug 2004).
  • Marzke, Robert, Piwowarczyk, J, Wolf, George. Ultra high-temperature NMR studies of bonding and incoherent convective motion rates in laser-heated molten, levitated ceramic samples. 106th Annual Meeting of the American Ceramic Society (Apr 2004).
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Bearat, Hamdallah, Wolf, George. Exploration of the role of heat activation in enhancing serpentine carbon sequestration reactions. 29th Coal Utilization and Fuel Systems Conference, Clearwater Florida (Apr 2004).
  • Marzkea, R, Piwowarczyka, J, Boucherb, S, Wolf, George. Progress in NMR studies of liquid ceramic materials. Four Corners Section Meeting of the American Physical Society (Oct 2003).
  • Marzke, R, Piwowarczyk, J, Wolf, George. Rotational/convective incoherent motion rates in levitated, molten Al2O3, measured by ultra high-temperature NMR. AFOSR Eutectic Ceramics Workshop (May 2003).
  • Piwowarczyk, J, Marzke, R, Piwowarczyk, J, Wolf, George, Takulapalli, B, Boucher, S, Petuskey, W. Melt structure in the Al2O3-CaO-LaPO4 system, studied by ultra high-temperature NMR in liquid ceramics. AFOSR Eutectic Ceramics Workshop (May 2003).
  • Marzke, R, Piwowarczyk, J, Wolf, George, Petuskey, W, Takulapalli, B. Aluminum diffusivity and chemical shift measured by ultra high-temperature NMR in liquid ceramics. March Meeting of the American Physical Society (Mar 2003).
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Béarat, Hamdallah, Sharma, Renu, Carpenter, R, Wolf, George. Investigations of the Mechanisms that Govern Carbon Dioxide Sequestration via Aqueous Olivine Mineral Carbonation. The 28th International Technical Conference on Coal Utilization & Fuel Systems (Mar 2003).
  • Chizmeshya, Andrew, McKelvy, Michael, Wolf, George, Sharma, Renu, Sankey, Otto, Bearat, Hamdallah, Diefenbacher, Jason, Carpenter, R. Quantum Simulation Studies of Olivine Mineral Carbonation. The 28th International Technical Conference on Coal Utilization & Fuel Systems (Mar 2003).
  • Piwowarczyk, J, Marzke, Robert, Wolf, George, Petuskey, W, Takulapalli, B. Al NMR study of molten aluminum oxide compounds and mixtures, measured at ultra high temperatures. Four Corners Regional Meeting of the American Physical Society (Oct 2002).
  • Marzke, R, Piwowarczyk, J, Wolf, George, Petuskey, W, Takulapalli, B, McMillan, P. Aluminum diffusivity and bonding in liquid ceramics, measured by ultra high temperature 27Al NMR. Joint 2002 AFOSR Contractors Meeting in Metallic Materials and Ceramic Materials (Aug 2002).
  • McKelvy, M, Carpenter, R, Béarat, H, Wolf, George, Sharma, R. Understanding Olivine CO2 Mineral Sequestration Mechanisms at the Atomic Level: Optimizing Reaction Process Design. University Coal Research Contractors Review Conference (Jun 2002).
  • McKelvy, Michael, Chizmeshya, Andrew, Bearat, Hamdallah, Diefenbacher, Jason, Sharma, Renu, Carpenter, R, Wolf, George. Developing a mechanistic understanding of serpentine CO2 mineral carbonation reaction processes. 27th International Technical Conference on Coal Utilization & Fuel Systems (Mar 2002).
  • Chizmeshya, Andrew, McKelvy, Michael, Sankey, Otto, Wolf, George, Sharma, Renu, Bearat, Hamdallah, Diefenbacher, Jason, Carpenter, R. Atomic-level understanding of CO2 mineral carbonation mechanisms from advanced computational modeling. 27th International Technical Conference on Coal Utilization & Fuel Systems (Mar 2002).
  • Zollner, Stefan, Edwards, N, Duda, Erika, Tolle, John, Taraci, Jennifer, McCartney, M, Menendez, Jose, Wolf, George, Smith, D, Kouvetakis, John. Optical, vibrational, and structural properties of GeSn alloys grown on Si by UHV-CVD. (Nov 2001).
  • Wolf, George. High Pressure Synthesis of Highly Crystalline Graphite Derivatives of C3N4, Frontiers of High-Pressure Research II: Application of High Pressure to Low-Dimensional Novel Electronic Materials. NATO Advanced Research Workshop (Jun 2001).
  • Shemkunas, M, Wolf, George, Petuskey, W. Synthesis and Characterization of Spinel Germanium and Tin Nitrides. 103rd Annual Meeting of the American Ceramic Society (Apr 2001).
  • Wolf, George. New Materials From High Pressure Routes. (Feb 2001).
  • Wolf, George. Pressure as a Variable in Materials Synthesis. MRSEC Winter Workshop (Jan 2001).
  • McMillan, Paul, Somayazulu, Maddury, Sudip, Deb, Dong, Jianjun, Leinenweber, Kurt, Hubert, Herve, Wolf, George, Sankey, Otto. Metastable Phase Transitions in Ge3N4 at High Pressure and High Temperature. Spring American Geophysical Union
  • Piwowarczyk, J, Marzke, R, Wolf, George, Boucher, S, Petuskey, W. Al bonding in melts of the Al2O3-CaO-LaPO4 system, studied by ultra high-temperature NMR. March Meeting of the American Physical Society
  • Marzke, R, Piwowarczyk, J, Wolf, George. Pulsed gradient NMR measurement of convective, incoherent motion rates, in levitated, molten samples of alumina. March Meeting of the American Physical Society
  • McKelvy, Michael, Chizmeshya, Andrew, Diefenbacher, Jason, Béarat, Hamdallah, Carpenter, R, Wolf, George, Gormley, Deirdre. Developing an Atomic-Level Understanding of the Mechanisms that Govern CO2 Sequestration Mineral Carbonation Reaction Processes. TMS 2005; EPD Congress

Service

  • ASU University Senate, Faculty Senator (2013 - Present)
  • ASU University Senate, Faculty Senator (2013 - Present)
  • CLAS Senate, Faculty Senator (2013 - Present)
  • CLAS Senate, Faculty Senator (2013 - Present)
  • INTEL International Science and Engineering Fair (ISEF), Co-Chair Chemistry Division (2013 - Present)
  • Chemistry Program Assessment Committee, Chairman (2009 - Present)
  • Committee on Undergraduate Student Research, Mentoring and Advising, Member (2009 - Present)
  • General Chemistry Instructional Programs Committee, Member (2009 - Present)
  • Online Course Development Intiatives Committee, Member (2009 - Present)
  • Undergraduate Curriculum Committee, Chairman (2009 - Present)
  • Undergraduate Curriculum Committee, Chairman (2009 - Present)
  • Undergraduate Program Assessment Committee, Chairman (2009 - Present)
  • Undergraduate Program Assessment Committee, Chairman (2009 - Present)
  • Undergraduate Curriculum Committee, Member (2006 - Present)
  • Learning Resources Center Committee, Member (2005 - Present)
  • Search Committee Graduate Program Coordinator, Member (2005 - Present)
  • Search Committee: Graduate Program Coordinator, Chairman (2004 - Present)
  • Undergraduate Curriculum Committee, Chairman (2009 - 2014)
  • Search Committee Graduate Program Coordinator, Member (2005 - 2006)
  • Graduate Recruitment, Chairman (2004 - 2005)
  • Graduate Program and Recruitment, Chairman (2001 - 2004)
  • Search Committee: Web Media Specialist, Chairman (2004 - 2004)